erythroblast

noun

eryth·​ro·​blast i-ˈrith-rə-ˌblast How to pronounce erythroblast (audio)
: a polychromatic nucleated cell of red bone marrow that synthesizes hemoglobin and that is an intermediate in the initial stage of red blood cell formation
broadly : a cell ancestral to red blood cells
erythroblastic
i-ˌrith-rə-ˈbla-stik How to pronounce erythroblast (audio)
adjective

Word History

Etymology

International Scientific Vocabulary

First Known Use

circa 1890, in the meaning defined above

Time Traveler
The first known use of erythroblast was circa 1890

Rhymes for erythroblast

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Browse Nearby Words

erythrite
erythroblast
erythroblastic
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Cite this Entry

“Erythroblast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/erythroblast. Accessed 7 Jul. 2026.

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Medical Definition

erythroblast

noun
eryth·​ro·​blast i-ˈrith-rə-ˌblast How to pronounce erythroblast (audio)
: a polychromatic nucleated cell of red marrow that synthesizes hemoglobin and that is an intermediate in the initial stage of red blood cell formation
broadly : a cell ancestral to red blood cells compare normoblast
erythroblastic
-ˌrith-rə-ˈblas-tik How to pronounce erythroblast (audio)
adjective

More from Merriam-Webster on erythroblast

Britannica.com: Encyclopedia article about erythroblast

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